Add phi adapter tests

[Canonik]

Description

Added focused unit coverage for the PhiArchitectureAdapter under tests/unit/model_bridge/supported_architectures/.

Issue #1302 tracks missing config tests for remaining TransformerBridge architecture adapters. This PR adds coverage for the phi adapter following the existing supported test patterns.

Part of #1302.

No new dependencies are required.

Type of change

• New feature (non-breaking change which adds functionality)

Screenshots

Not applicable.

Checklist:

• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have not rewritten tests relating to key interfaces which would affect backward compatibility

Validation

• .venv/bin/python -m pytest tests/unit/model_bridge/supported_architectures/test_phi_adapter.py -q
  • 53 passed
• .venv/bin/python -m pytest tests/unit/model_bridge/supported_architectures/test_phi3_adapter.py -q
  • 26 passed